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54F574LM 数据表(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 54F574LM
功能描述  Octal D-Type Flip-Flop with TRI-STATE Outputs
Download  8 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

54F574LM 数据表(HTML) 2 Page - National Semiconductor (TI)

  54F574LM Datasheet HTML 1Page - National Semiconductor (TI) 54F574LM Datasheet HTML 2Page - National Semiconductor (TI) 54F574LM Datasheet HTML 3Page - National Semiconductor (TI) 54F574LM Datasheet HTML 4Page - National Semiconductor (TI) 54F574LM Datasheet HTML 5Page - National Semiconductor (TI) 54F574LM Datasheet HTML 6Page - National Semiconductor (TI) 54F574LM Datasheet HTML 7Page - National Semiconductor (TI) 54F574LM Datasheet HTML 8Page - National Semiconductor (TI)  
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Connection Diagrams
Pin Assignment
for DIP SOIC and Flatpak
TLF9567 – 2
Pin Assignment
for LCC
TLF9567 – 3
Functional Description
The ’F574 consists of eight edge-triggered flip-flops with in-
dividual D-type inputs and TRI-STATE true outputs The
buffered clock and buffered Output Enable are common to
all flip-flops The eight flip-flops will store the state of their
individual D inputs that meet the setup and hold times re-
quirements on the LOW-to-HIGH Clock (CP) transition With
the Output Enable (OE) LOW the contents of the eight flip-
flops are available at the outputs When OE is HIGH the
outputs go to the high impedance state Operation of the
OE input does not affect the state of the flip-flops
Function Table
Inputs
Internal
Outputs
Function
OE
CP
D
Q
O
H
H
L
NC
Z
Hold
H
H
H
NC
Z
Hold
H
L L
L
Z
Load
H
L H
H
Z
Load
L
L L
L
L
Data Available
L
L H
H
H
Data Available
L
H
L
NC
NC
No Change in Data
L
H
H
NC
NC
No Change in Data
H e HIGH Voltage Level
L e LOW Voltage Level
X e Immaterial
Z e High Impedance
L e LOW-to-HIGH Transition
NC e No Change
Logic Diagram
TLF9567 – 5
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays
2


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